this was very creative idea for a movie....really brilliant and unthinkable script. the plot definitely was the best part of this movie...with so many star actor it took a lot of effort to make audience understand the plot in just 2 hours time, and they successfully did that. i dont feel boring while watching this, i dont feel confuse even if the faces constantly changing. the emotion was there, and i silently crying while watching towards the end...because the emotion was intense. surely, the one and only main actress was the center of this movie, and she nailed it. while watching her working and doing her thing, you'll understand why Woo Jin fall in love with her, and she's really beautiful either. woo jin character that i really like was Lee Beum Soo...he was the first Woo Jin who fall in love with Ji Soo, and the acting was believable for me. this movie was packed with handsome, brightly shining stars all over, from the moment park seo joon appearance its just getting glittery till the end but...whats hook me is some little actor who become Woo Jin (i dont know his name, its between Yoo Jae Sang or Pak Min Soo i guess) who getting drunk while eating with Ji Soo while dating, its funny but subtle, and warm. there's not much music in this movie, but the music is somehow playing a big part in connecting the character (making Ji Soo remembering Woo Jin). this movie was worth watching, and rewatching (because there was so many handsome people in it), its not confusing so you'll understand the plot right away. the morale of the story is exactly like the tittle, the beauty inside. you know, in this era we're living, people (including us) tend to look another people from their outer appearance..how we should handle things when the person we love doesnt even have a steady appearance? will you still love them? will you stay with them? how will you handle your surrounding? what will you choose between your love one (with his weird issue) or your friends and family (and leaving your lover)? i think this movie capturing today issue really well, the message was deliver perfectly (for me) and the ending is beautiful too. thank you for making such a amazing movie with beautiful morale story, at least it become a reminder for me.